// Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

package com.android.tools.r8.ir.optimize;

import com.android.tools.r8.graph.ClassHierarchy;
import com.android.tools.r8.graph.DexEncodedMethod;
import com.android.tools.r8.graph.DexType;
import com.android.tools.r8.ir.code.BasicBlock;
import com.android.tools.r8.ir.code.IRCode;
import com.android.tools.r8.ir.code.InvokeMethod;
import com.android.tools.r8.ir.optimize.Inliner.InlineeWithReason;
import java.util.ListIterator;

interface InliningStrategy {

  /** Return true if there is still budget for inlining into this method. */
  boolean stillHasBudget();

  /**
   * Check if the inlinee will exceed the the budget for inlining size into current method.
   *
   * <p>Return true if the strategy will *not* allow inlining.
   */
  boolean willExceedBudget(InlineeWithReason inlinee, BasicBlock block);

  /** Inform the strategy that the inlinee has been inlined. */
  void markInlined(InlineeWithReason inlinee);

  void ensureMethodProcessed(DexEncodedMethod target, IRCode inlinee);

  boolean isValidTarget(
      InvokeMethod invoke, DexEncodedMethod target, IRCode inlinee, ClassHierarchy hierarchy);

  void updateTypeInformationIfNeeded(
      IRCode inlinee, ListIterator<BasicBlock> blockIterator, BasicBlock block);

  DexType getReceiverTypeIfKnown(InvokeMethod invoke);
}